Hello Sascha,
On Mon, Nov 02, 2020 at 10:14:29AM +0100, Sascha Hauer wrote:
> On Fri, Oct 30, 2020 at 12:36:14PM +0100, Uwe Kleine-König wrote:
> > Check more carefully for failing requests. This improves the error
> > message when trying to mount a non-exported nfs directory from:
> >
> > nfs_mount_req: file handle too big: 44831
> >
> > to
> >
> > nfs_mount_req: Mounting gave error NFS3ERR_ACCES(0xd)
> >
> > .
> >
> > Signed-off-by: Uwe Kleine-König <u.kleine-koenig@xxxxxxxxxxxxxx>
> > ---
> > fs/nfs.c | 91 +++++++++++++++++++++++++++++++++++++++++++++++++-------
> > 1 file changed, 81 insertions(+), 10 deletions(-)
> >
> > diff --git a/fs/nfs.c b/fs/nfs.c
> > index 15ddab7915df..0be32322fb65 100644
> > --- a/fs/nfs.c
> > +++ b/fs/nfs.c
> > @@ -636,13 +636,33 @@ static uint32_t *nfs_read_post_op_attr(uint32_t *p, struct inode *inode)
> > return p;
> > }
> >
> > +static int nfserror_to_err(u32 nfserror, const char **errorname)
> > +{
> > +#define E(NFSERR, ERR) \
> > + case NFSERR: \
> > + *errorname = #NFSERR; \
> > + return -ERR
> > +
> > + switch (nfserror) {
> > + E(NFS3_OK, 0);
> > + E(NFS3ERR_NOENT, ENOENT);
> > + E(NFS3ERR_IO, EIO);
> > + E(NFS3ERR_ACCES, EACCES);
> > + E(NFS3ERR_NOTDIR, ENOTDIR);
> > + E(NFS3ERR_NAMETOOLONG, ENAMETOOLONG);
>
> You convert the NFS error codes to the corresponding error codes. For
> these we already have strings, so why not just print them with %pe rather
> than returning another string from this function?
When I started this function I wasn't aware that this is a real 1:1
mapping (i.e. s/NFSERR_/E/) and I considered it useful that the error
name (as it appears in the NFS3-RFC) is part of the error message. With
some distance to this patch just skipping the errorname part looks fine
for me.
I will rework that.
Best regards
Uwe
--
Pengutronix e.K. | Uwe Kleine-König |
Industrial Linux Solutions | https://www.pengutronix.de/ |
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